$1.3 Million Reward For Information About Cannes Jewelry Heist

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Police outside the Carlton hotel, in Cannes, southern France, the scene of a daylight raid, Sunday, July 28, 2013. A staggering 40 million euro ($53 million) worth of jewels and diamonds were stolen Sunday from the Carlton Intercontinental Hotel in Cannes, in one of Europe's biggest jewelry heists recent years, police said. French Riviera hotel was hosting a temporary jewelry exhibit over the summer of the prestigious Leviev diamond house, which is owned by Israeli billionaire Lev Leviev. (AP Photo/Lionel Cironneau)

An affiliate of British insurers Lloyds of London is offering a 1 million euro ($1.3 million) reward for information leading to a diamond collection stolen at gunpoint from a jewel show in Cannes.

The jewels belonging to the Israeli billionaire Lev Leviev were on display at the same hotel featured in Alfred Hitchcock's "To Catch a Thief" when a single gunman walked in to the ground floor show, threatened the handful of unarmed guards, and then disappeared down a side street with the $136 million cache, police have said.

The July 28 theft at the Carlton Intercontinental Hotel ranks among the largest jewel heists in history. In 2008, thieves stole $118 million in rings, necklaces and luxury watches from the Harry Winston store in Paris.